1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473fe2f745fb3253c0bcefcf6fa8f906118961c1a4d576fbbdb3b3a91443a0e6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36e6698b-cb5a-42de-9331-3c128d004373.json and https://artists.proofprofile.net/proofs/artist/36e6698b-cb5a-42de-9331-3c128d004373.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be15c5afcea393789377328dc9208fe3e39c0bfb9878d8e3103d43a1bc0f89c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKPL1782213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3329df5e7c35fb093d30c23909d16cdf057c10fecd230b7017130df0edb2377f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKPL1784459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0944c567b08dfe71065e4966527e0863a423a9265dd21372b3dd986d2654ddca. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKPL1972707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7c2f5e265ff9759899a01e7070829a81429415e3a6b3e5284db368735063c9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKPL1971789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232d5af0db6b1c7f905ebde9dad7bb95da0b8a8f840e4f7be7c8fb54d1e847da. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ2588341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232d5af0db6b1c7f905ebde9dad7bb95da0b8a8f840e4f7be7c8fb54d1e847da. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ2588341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879448ea82c3af62813047b8ed3f588fae931ac68066e060d6135e516163bfd9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TX2558300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80256d4172851fc9385f85a588fc3e2364cfb05fbd70e2bc31decfd814733d10. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P42523562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232d5af0db6b1c7f905ebde9dad7bb95da0b8a8f840e4f7be7c8fb54d1e847da. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ2588341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879448ea82c3af62813047b8ed3f588fae931ac68066e060d6135e516163bfd9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TX2558300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879448ea82c3af62813047b8ed3f588fae931ac68066e060d6135e516163bfd9. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TX2558300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232d5af0db6b1c7f905ebde9dad7bb95da0b8a8f840e4f7be7c8fb54d1e847da. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ2588341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa312eebd03a2cf64cf895d37f576f00630c1c9d5120a7abc16cc8425ffebd5a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7282569375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80256d4172851fc9385f85a588fc3e2364cfb05fbd70e2bc31decfd814733d10. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:42:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P42523562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c443e4f298075a2aaab61e82783143d3a0d06deec0ed99aebaa5edc4b676e0f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7282569376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aafbee7d6988aec089bc329cf3ebd0b65ed40b4f7d74da1a5ae3e351e4e9846. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7282554222.